import React from 'react'
import { NavLink, useRoutes } from 'react-router-dom'
import routes from "./routes"


export default function App() {
  // 根据路由表生成对应的路由规则
  const element = useRoutes(routes)

  function computedClassName({isActive}) {
    return isActive ? 'xia' : ''
  }
  return (
    <div>
    <div className="row">
      <div className="col-xs-offset-2 col-xs-8">
        <div className="page-header">
          <h2>React Router Demo</h2>
        </div>
      </div>
    </div>
    <div className="row">
      <div className="col-xs-2 col-xs-offset-2">
        <div className="list-group">
          {/* 封装自己的NavLink */}
          {/* <MyNavLink to="/home">Home</MyNavLink>
          <MyNavLink to="/about">About</MyNavLink> */}
          <NavLink className={computedClassName } to="/home">Home</NavLink>
          <NavLink className={ ({isActive}) => isActive ? 'xia' : '' } to={'/about'}>About</NavLink>

 
        </div>
      </div>
      <div className="col-xs-6">
        <div className="panel">
          <div className="panel-body">
            {/* 注册路由 */}
            {element}
          </div>
        </div>
      </div>
    </div>
  </div>
  )
}
